This observation is inspired by a post from astronomer Daniel Fischer @cosmos4u (https://scicomm.xyz/@cosmos4u/115209967824042242) who writes:
"...what about longterm stability? Will important and maybe even influential #Mastodon posts be still around in 5, 10, 50 years? On much-despised X - or FB - those from 10+ years ago are still around (if you know the URLs)."
Yes, old posts on X are still around, but there is no guarantee that they will remains so. This is entirely at the whim of the then current owner.
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